Thanks guys :D
VC - Most of the pics are available in high res on my flicker album for this car:
http://www.flickr.com/photos/16818590@N08/sets/72157620441401731/Click on 'All sizes' above the pic you're keen on.
Mojo - Most of the pics get a bit of sharpening and a touch of levels work just to knock off any highlights or bring out detail in the shadows.
But the bounced light in the underground carpark does give some pretty cool effects on its own, so very little was done there.
I sometimes add a little bit of vignetting to focus your attention a bit, but they are usually left alone - I bracket in-camera a lot to get the right exposure (don't trust the LCD on the back of the cam)